Mobile Diesel Technician — Fleet Maintenance Pro

Saia Inc.; Oklahoma City (OK); On-site; USD 74,000 - 84,000; Full time

Job summary

Saia is seeking a diesel mechanic to perform preventive maintenance, inspections, and repairs on tractors, trailers, and related fleet equipment while traveling between terminals in a mobile service van. The role ensures equipment is safe, compliant, and operational by responding to service needs and documenting repairs.

Ideal candidates bring 5+ years of diesel experience, strong knowledge of diesel systems, and the ability to diagnose issues independently; strong communication and safety

Qualifications

• 5+ years of diesel mechanic experience.
• Strong working knowledge of diesel engines, brakes, electrical, and hydraulic systems.
• Proficiency in diagnostic software.
• Ability to work independently, troubleshoot complex issues, and adapt to varied environments.

Responsibilities

• Performs preventive maintenance and repairs on tractors, trailers, and related fleet equipment in compliance with company standards and DOT regulations.
• Travels to assigned terminals and remote locations to diagnose issues and complete repairs using a mobile service van.
• Responds to road calls and emergency service requests as needed to minimize equipment downtime.
• Conducts thorough inspections to identify potential safety concerns and ensures equipment remains compliant with federal, state, and local requirements.
• Completes required documentation for maintenance activities, parts usage, and repair outcomes in the company’s maintenance system.
• Collaborates with terminal leadership, fleet management, and drivers to prioritize work and schedule service efficiently.
• Ensures proper inventory management and security of tools, parts, and equipment assigned to the mobile unit.
• Maintains a clean, safe, and organized mobile workspace while following all safety protocols and company policies.

Skills

Diesel engines

Brakes

Electrical systems

Hydraulic systems

Diagnostic software

Independent work

Troubleshooting

Education

High school diploma or GED

Tools

Diagnostic software

Job description

Saia is seeking a diesel mechanic to perform preventive maintenance, inspections, and repairs on tractors, trailers, and related fleet equipment while traveling between terminals in a mobile service van. The role ensures equipment is safe, compliant, and operational by responding to service needs and documenting repairs.

Ideal candidates bring 5+ years of diesel experience, strong knowledge of diesel systems, and the ability to diagnose issues independently; strong communication and safety